See http://cjblomqvist.com/blog/Derby-Issue-with-arraylike-bindings-in-the-view-and-workaround/28 for info

lib_app_index.js

var app = require('derby').createApp(module)
    ;

app.get('/*', function(page, model, params) {
  model.set('_page.unplannedOrder', [{"id":"1"}, {"id":"2"}, {"id":"3"}]);
  page.render('');
});

app.enter('/*', function (model) {
  model.remove('_page.unplannedOrder', 0);
  model.set('_page.selected.3', true); // Triggers red backround on wrong li on the top ul (li above - aka #2)
});


app.view.fn({
    /**
     * Alternative to the buggy binding-implementation of myPath[myKey]
     * E.g. where:
     *   myKey = 1
     *   myKey2 = 0
     * {multiplePartPath(myPath, myKey, "property", mySecondKey)}
     * will result in a dynamic version of:
     *   {myPath.1.property.1}
     * @param  {Object}   basePath    The base path already converted to an object (e.g. the path without quotes)
     * @param  {String/Key} leaf     A leaf as a string, either directly or indirectly through a variable (which thus will be converted to a string through Derby)
     * @return {Value}    The returning value
     */
    multiplePartPath: function (basePath) {
        var argumentsLength = arguments.length
            ;

        for(var i = 1; i < argumentsLength && typeof basePath !== 'undefined'; i++) {
          basePath = basePath[arguments[i]]
        }

        return basePath;
    }
});